{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339154",
    "entityType": "User",
    "nonce": "0x74a9dee914d70d526b7d2e9de61c7f09fa698f8b9103956e9b52604863c709e7",
    "signature": "0x2ae8a7524fec2c6ba00bc059228099bdd03d367246f510f380879dfba62ee235456ceab9ac3842377f40c9abd74995aa31d789f8f883d69ffd4a532e01438dbe1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}